Convertible acetylene-gas and oil lantern.



R; C. I. WELCH 6L S. L. SWEENEY. CONVERTIBLE ACETYLENE GAS AND OIL LANTERN.

APPLICATION FILED JAN. II, ISIS.

Patented Dec. 12, 1916i.

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ROY C. J'. WELCH AND STANLEY L. SWEENEY, OF BORT COQUITLAM, BRITISH. COLUMBIA, CANADA.

CONVERTIBLE ACETYLENE-GAS ANDOIL LANTERN.

Specieation of Letters Patent.

Patented Dec. l2, 1916.

To all whom t may concern.'

Be it known that we, ROY C. J. VVELGH and STANLEY L. SWEENEY, both citizens of the Dominion of Canada, residing at Port Coquitlam, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Convertible Acetylene-Gas and @il Lanterns, for which the following is a specification.

This invention relates to a portable lantern of that class used by railway brakemen and yardmen and is particularly designed to enable either acetylene gas or oil to be used as the illuminant, the lamp being provided with a supplementary oil reservoir and wick burner which are respectively used in conjunction and are interchangeable with the carbid holder and water reservoir of an acetylene gas lamp.

Although particularly designed for a lantern of the class above described, the arrangement of parts is equally applicable with slight modification to any lantern.

The invention is fully described in the fol lowing specification, reference being made to the drawings by which it is accompanied, in which:

Figure 1 is a vertical section through the lantern as adapted to use acetylene gas. Fig. 2 is a similar view showing the application of the interchangeable wick burner and its removable oil reservoir fitting the carbid holder, and Fig. 3 is a sectional plan on the line a-a in Fig. 1. Fig. 4 is a cross section of the carbid holder.

In these drawings 2 represents a gas chamber to which is secured the wire guard and frame 3 which supports the hood 4 of the lamp, between which hood and a gallery 5, secured on the upper side of the chamber, the glass globe 6 is removably inserted. The wire frame 3 may be carried down to form a base for the lamp or an annular base may be secured to the lower part of the chamber to project beneath its bottom.

The top of the gas chamber 2 is concentrically apertured and threaded to receive a correspondingly threaded connection 8 secured to the bottom of a water reservoir 9, or interchangeable with this water reservoir the threaded end of a wick oil burner 10. In the bottom of the chamber 2 is a concentric aperture to the edge of which is secured a screw threaded ring 11 adapted to receive a corresponding thread. 011 the bottom of a carbid cage 12. This cage 12 within the gas chamber'2 is of wire mesh or is finely per-' forated and is furnished with the customary central tube 13 secured on a base plate 14 through which tube the water by which the carbid is converted into gas is delivered to the underside of the base plate and therefore beneath the carbid in the cage. A retaining plate 15 having a spring secured on its upper side may be furnished, which plate fits loosely on the centraltube 13 to prevent the carbid shaking loose and the carbid cage has a. gauze mesh cover 16 through which the tube 13 projects or is accessible.

Water is delivered from the reservoir 9 into the tube 13 of the carbid chamber by a tube'17 admission of the water to this tube being controlled within the reservoir by a valve 18, the stem of which is threaded through a nut 19 secured in the top of the reservoir 9 and provided with a finger engagement thereabove. In the top of the reservoir is a closa'ble filling aperture 20.

A tube 21 is axially secured in the top and bottom of the water reservoir 9, in the upper end of which tube is socketed the gas burner 22 and in this tube beneath the burner any suitable gas filtering material may be packed. The gas generated'may thus pass direct from the chamber 2 to the burner 22 and as the carbid is disintegrated it will pass through the mesh of the cage 12 into the chamber 2. rlhe carbid cage 12 may be withdrawn from below for cleaning and charging with carbid.

If it is required to use oil instead of acetylene gas for the illuminant, the water reser- `voir with its connected burner, etc., is relmoved from the gas chamber 2 and the wick oil burner 10 is substituted. The carbid cage v12 is removed from below and being emptied of its ash and oil reservoir 25, which is adapted to closely fit the carbid chamber, is inserted within it. The upper end of this oil reservoir has a concentric aperture the edge of which is upwardly anged to fit within the screw connection of the oil wick burner 10 and to retain a gasket of leather or the like in the joint between them to make an effective joint.

The convertible gas and oil lantern hereinbefore described is free from the objections commonly urged against lamps of this character. lts weight need not exceed that of an ordinary oil lamp while the light of the claim as-new and desire to be lits the carbid holder,

acetylene is more brilliant and distinct and is preferred by those who use the lamp, while if for any reason oil is required to be used, the reservoir 25 can be quickly introduced 'and the oil burner l0 is readily substituted for the water reservoir and its gas burner.

As anracetylene lantern, the arrangement as above described has the further advantage that the water reservoir is in direct comuninication with the carbid container and being adjacent the heat of the burner, is not eX- vposed to the risk of the water service freezingas is commonly the case where the water reservoir is at the top of the lamp andv connected to the carbid chamber by a flexible tube.

Y Having now particularly described our invention, we hereby declare that what we protected in by Lettersy Patent, is:

l. In a lantern of the class described, the combination with a chamber having an aperture in the top and bottom, a carbid holder secured in and forming a closure or the lower aperture andv projecting into the chamber, a water reservoir removably connected in the upper aperture of the chamber, said reservoir having` a controllable water'delivery into the carbid holder, and a tube through the water reservoir communicating with the chamber, and a gas burner inserted in the upper end of this tube, said reservoir, said controllable water delivery andsaidtube being bodily removable as a unit from saidA chamber.

2. In a lantern of the class described, the combination with a chamber having an aperture inthe top and bottom, a carbid holder having apertured sides secured in 'and forming a closure for the lower apertureand projecting into the chamber, a water reservoir removably connected in the upper aperture of the chamber, said reservoir havinga controllable water delivery into the carbid holder, and a tube through it communicating with vthe chamber, and a gas burner inserted in the upperend of the tube, said reservoir, said controllable water delivery andsaid tube 'being' bodily removable as a unit from said chamber.

' Y, 3. In a lantern of the class described, the

5V holder secured in and forming a closure for the lower aperture of the4 chamberV to project into it and having apertured side walls, a central tube having a perforated disk secured on its lower end which diskloosely a water reservoir removably connected in the upper aperture of the chamber, said reservoir having a controllalblewater delivery into the central tube of the carbid holder, and a tube through the water reservoir the lower end of which communicates with the chamber, anda gas burner secured in the upper end of the tube, said reservoir, said controllable water delivery and said tube being bodily removable'as a unit from said chamber.

4. In a lantern of the class described, the combination with a chamber having an aperture in the top and bottom, a carbid holder secured in the lower aperture and projecting into the chamber, a water reservoir removably secured in the upper aperture oi the chamber, said reservoir having a controllable water delivery into the carbid holder, and a tube through the reservoir communicating at its lower end With the chamber, a gas burner removably inserted in the upper end of the tube, an oilvreservoir adapted to it the carbid holder in the upper end of which reservoir is an aperture adjacent the upper aperture of the chamber, and a wick burner adapted to be secured in the upper aperture of the chamber and interchangeable with the water reservoir, the under end of which burner is adapted to seat upon and form a joint around the aperture in the upper end of the oil reservoir.

5. In a lantern of the class described, the combination with a chamber having an aperture in the top and bottom, a carbid holder secured in the lower aperture to project into the chamber, said holder having apertured side walls, a central tube secured at its lower end in an apertured disk adapted to loosely lit the carbid holder, a water reservoir removably secured in the upper aperture of the chamber, said reservoir having a controllable water delivery into the central tube of the carbid holder, and a tube through the reservoir communicating at its lower end with the chamber, a gas burner removably inserted in the upper end of said tube, an oil reservoir adapted to lit the carbid holder when the central tube and disk are removed, in the upper end of which oil reservoir is an aperture concentric with and adjacent the upper aperture of the chamber, and a wick burner adapted to lit the upper aperture of the chamber and removably interchangeable with the water reservoir, the lower end of which burner is adapted to seat within the chamber around the aperture in the upper end of' the oil reservoir.

6. In a lantern of the class described, the combination with a chamber having a concentric aperture in the top and bottom, a carbid holder secured in the lower aperture of the chamber to project within it and having apertured side walls and an apertured removable cover, a central tube secured at its lower end in an apertured disk adapted to loosely it the carbid holder, a water reservoir removably secured in the upper aperture of the chamber, said reservoir' having a controllable water delivery l into the central tube of the carbid holder, and a tube through the reservoir communieating at its lower end with the chamber, a gas burner removably inserted in the upper end of said tube, an oil reservoir adapted to fit the carbid holder when the cover and the central tube and disk are removed, in the upper end of which oil reservoir is an aperture concentric with and adjacent i0 the upper aperture of the chamber, and a opies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Wick oil burner adapted to t the upper aperture of the chamber and removably interchangeable with the Water reservoir, the lower end of which burner is adapted to seat Within the chamber around the aperture in the upper end of the oil reservo-ir.

In testimony whereof We afiX our signatures.

ROY C. J. WELCH. STANLEY L. SWEENEY.

Washington, '.D. C. 

